If a ∥ b and b ⊥ y, then a ⊥ y.

a ∥ y.

x ∥ y.

x ⊥ a.

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

The pronunciation aid that determines the stress placed upon a syllable is the